Function getElement

src/js/util/index.js:116–127

(obj)

};

const getElement = (obj) => {
  if (isElement(obj)) {
    // it's a jQuery object or a node element
    return obj.jquery ? obj[0] : obj;
  }

  if (typeof obj === "string" && obj.length > 0) {
    return document.querySelector(obj);
  }

  return null;
};

const emulateTransitionEnd = (element, duration) => {
  let called = false;